Furnace grate



Get. 18, 1949. A, E, KOZENSKI 2,485,386

FURNAGE GRATE Filed April l5, 1948 2 Sheets-Sheet 1 ANTON E. KOZENSKI Oct. 18, 1949. A. E. Kozl-:NsKlf FURNACE GRATE 2 Sheets-Sheet 2 Filed April l5 l1948 zar/r@ ral/ C u? JL INVENTOR ANTON EV.KOZENSKI "True-IE;

ATT RNEYS Patented Oct. 18, 1949 UNITED stares PATENT FURNACE GRATE Anton E. Kozenski, Racine, Application April 15, 1948, kSerial No. `21,170

1 Claim. l

My invention refers to coal burningvfurnaces, either of the hot air or hot water The main .object .of .myinvention is to provide a simple and economical Irepot grate which will insure perfect fuel combustion and convenient installationor replacement in anytype of furnace, whereby ample introductionof'air is admitted` to the fuel and clinkers `are eliminated, it being understood, inv the consummation .of fuel, a fine powder ash will develop, resulting in great saving of fuel.

A further object of my invention is to provide a. semi-circular sectional supporting ring, for the reception of semi-circular grate sections, the same being secured together by a shaker rod. By the above mechanism, it should be noted that great convenience in assembling the structure is obtained and that in burning fuel, the same is kept clear from ashes or clogging, due to a uniform draft, whereby adequate oxygen is supplied to the fuel.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts, substantially as hereinafter described, and more particularly dened by the appended claim, it being understood that such changesr in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claim.

In the accompanying drawings is illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far devised for the practical application of the principles thereof.

In the drawings:

Fig. 1 represents a sectional elevation of a standard furnace having a grate embodying the features of my invention, the section being indicated by line I-I of Fig. 3

Fig. 2 is an enlarged detail sectional view through the grate mechanism.

Fig. 3 is a plan sectional View, the section being indicated by line 3-3 of Fig, 1.

Fig. 4 is a fragmentary cross sectional View through the grate mechanism, the section being indicated by line 4-4 of Fig. 3; and

Fig. 5 is a fragmentary sectional face View indicating one of the joints between the grate supporting ring sections, the View being indicated by line 5-5 of Fig. 3.

Referring by characters to the drawings, A indicates a standard furnace, having a feed door B, a iirepot C, and an ashpit D, the same being provided with a vented clean-out door E, allo'f which parts are of standard construction.

The bottom :of the iirepot is provided with-a ring l in two sections, which sections are .provided with'tongnes 2,'in lapped union with slottedeax-s 2', which ears and tongues are connected -:by bolts 3. By this connection the ring sections `may be adjusted slightly to accommodate irreguiarities in the circular eoniirmation of the flrepot.

The `ring is preferably in two sections for'ithe purpose of assemblage, whereby said sections may readily be inserted through the fuel feed door B. After the ring sections are coupled together, the said ring is anchored, by a series of bolts 4, to the wall of the repot, and the outer face of the ring is preferably spaced from the firepot 'walls by washers 4'.

The upper face of the ring is shouldered to form a stepped bearing surface for a grate 5, Which grate, at its outer edge, is also shouldered to form a mitered seat, with relation to the ring bearing surface.

The grate comprises a pair of semi-circular sections 6, 6', which sections are centrally abutted vand secured together by a pair of hinges 1, 1 that depend from the bottom surface of the grate elements.

Attention is also directed to the fact that the grate sections are interrupted by a series of circular vent apertures 8, which apertures are tapered inwardly from the bottom surface of the grate elements, whereby air passing through the grate is contracted and forcibly discharged up through the bank of coal that is supported by the grate. Thus the proper amount of oxygen is universally distributed throughout the bed of coal to insure perfect combustion and consummation of the fuel, without developing clinkers.

While I prefer round tapered apertures for venting the grate, I may, in some instances, form the apertures in different shapes.

It is further understood, due to this proper fuel combustion, the ashes accumulated in the bottom of the furnace will be of a ne powdery nature.

While I have described the grate sections as being connected by hinges, I may, in some instances, dispense with these hinges, whereby the grate sections are introduced through the feed door and simply Vdeposited upon the ring with their central edges snugly engaged.

The semi-circular grate sections each have depending apertured ears 9, 9', and these aligned ears are connected by a shaker rod l0, which shaker rod is provided with an intermediate collar I 0' and a screw threaded end I0, whereby the rod engages both ears and is in threaded union with the ear 9, to thus securely bind the grate sections together, due to the clamping engagement of the rod and ears.

The outer end of the shaker rod l extends through a slot IlI in the furnace wall just about the ash door E, and the end of said rod is adapted to receive a handle I I. By this rod arrangement, it is apparent that the grate can be oscillated readily upon its bearing ring, whereby the ashes are thoroughly separated from the coal and said ashes are then dropped into the ashpit D, in the usual manner.

As indicated in Fig. 2 of the drawings, when the semi-circular grate sections are in hinge connection, the grate may readily be assembled upon the ring, or removed therefrom, by collapsing the same upon its hinge elements, as indicated in dotted lines of Fig. 2.

From the foregoing description it is apparent that my improved grate can readily be assembled in any form of standard furnace, in which case the usual grate is removed and replaced by my structure, it being understood that in manufacturing new furnaces, my grate may be an integral part thereof.

I claim:

In a furnace having a repot, a feed door above the firepot, an ashpit below the firepot, a ventilated clean-out ashpit door in communication with said ashpit, and a slot in the furnace wall above the ashpit door; the combination of a two part ring having lapped ends secured together, the lapped ends of the two-part ring being provided with a shouldered grate receiving face, bolts securing the ring to the bottom portion of the repot wall, a perforated grate comprising two semicircular sections, hinges for connecting the two grate sections, the grate sections having matched shouldered edges seated upon the shouldered faces of the ring, aligned apertured ears depending from the grate sections one of the ear apertures being threaded, and a shaker rod having a binding collar and a threaded end engaging the threaded apertured grate ear, whereby said grate sections are clamped together.

ANTON E. KOZENSKI.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 198,007 Eberly Dec. 11, 18'77 1,190,396 Frazer July 11, 1916 1,452,584 Abel Apr. 24, 1923 1,939,877 Conrad Dec. 19, 1933 

